Producing brown, olive, and green shades on the fiber.



IINITED STATES PATEN T OFFICE.

HENRI SCI-IMID, OF MIILHAUSEN, GERMANY, ASSIGNOR TO BADISCHE ANILIN &SODA FABRIK, 0F LUDWIGSHAFEN-ON-THE-RI-IINE, GERMANY, A CORPORATION.

PRODUCING BROWN, OLIVE, AND GREEN SHADES ON THE FIBER.

No Drawing.

Specification of Letters Patent. Application filed March 25, 1909.

Patented July 5, 1910. Serial No. 485,764.

To all whom it may concern:

Be it known that I, HENRI ScHMn), chemist, citizen of the SwissRepublic, residing at iilhausen, in Alsace, Germany, have in vented newand useful Improvements in Producing Brown, Olive, andGreen Shades onthe Fiber, of which the following is a specification.

It is known that, by suitably oxidizing para phenylene diamin in thepresence of the fiber, reddish brown shades can be obtained possessingmany good qualities. It has now been discovered that in a somewhatsimilar manner various shades as hereinafter explained, can be obt-aine'by suitably oxidizing meta-amino-phenolic bodies on the fiber. For thepurposes of this invention the salts of these bases are submitted tooxidation with alkali chlorate and ferrocyanid in a manner analogous tothat customary when producing anilin black. If, for instance, goodstreated with the hydrochloric acid salt of 1.3-amino-phenol be steamedin the presence of sodium chlorate and yellow ferrocyanid of potash andsubsequently chromed or aged and washed, as in the production of anilinblack, a bronze-olive shade is obtained which possesses practical value.By soaping, the shade can be rendered browner and more nearly bronzecolor. If shades resembling bister be desired, after steaming andchroming, or aging, the goods must be treated with analkali, which canbe done by passing the goods through a lukewarni bath containingsilicate of soda, borax, soda, or the like. When the goods thus treatedare soaped, a brown, with a distinct yellow shade, is obtained. Amongthe meta-amino-phenolic bodies which can be used, I mentionmeta-amino-phenol itself and the meta-amino-cresols. Para-aminophenolsand orthoamino-phenols can also be used in conjunction with themeta-aminophenolic bodies, and various shades can be obtained. It hasfurther been discovered that green and olive shades can be obtained bychoosing conditions which tend to in crease the formation and preventthe decomposition of Prussian blue, that is, by increasing the quantityof ferrocyanid employed and the acidity and preventing the decompositionof the blue by washing, after chroming or aging, in water free fromlime, or even in acidified water.

The shades obtained according to this invention can be produced usingeither white, or colored reserves. The shades have good fastness againstthe action of light and soap.

The following are invention can be performed, but it is not confined tothese examples.

Examples: Prepare a bath containing thirty grams of meta-amino-phenol,thirty cubic centimeters of thirty per cent. hydrochloric acid, thirty,to forty, grams of potassium ferrocyanid, and twenty-five grams ofsodium chlorate in each liter of the bath. Or the following proportionsmay be taken. Twenty-five grams of meta-amino-phenol, fifty, to sixty,cubiccentimeters of thirty per cent. hydrochloric acid, sixty grains ofpotassium ferrocyanid, and twenty-five grams of sodium chlorate in eachliter of the bath. In either case, filter the solution, pad the goodswith the filtered solution, and dry on the hot fiue. At this stage thegoods may appear white, or slightly colored. If desired, a white, orcolored, reserve can be printed onto the grounded goods. goods aresteamed for about ten minutes in a Mather & Platt apparatus and treatedwith a lukewarm solution of sodium bichromate. To obtain a green shade,wash the goods with slightly acidified water, and dry them. To obtain abrown shade, wash the goods in water, and pass them through a bath ofsodium silicate and wash and soap them. For white reserve there can beused, for instance, four hundred grains of gum solution, four hundredgrams of potassium sulfite (45 Be) mixed with one hundred grams of gumsolution, and one hundred grams of rongalite C. For colored reserves oncotton the ordinary albumin dyes to which alkali sulfite and acetatehave been added, or basic dyes with zinc white, can be used. Upon silk,or half silk, it is sufiicient to print basic dyes together withpotassium sulfite and sodium acetate. In these examples themeta-amino-phenol can be replaced by other meta-amino-phenolic bodies;for instance, by either of the meta-aminocresols (CH :OH:NH =1:2:4, or1:4:2), in which case shades which are more yellow are produced.

Now what I claim is:

1. The process of producing brown, olive,

H and green shades on the fiber by applying examples of how my.

steaming, then chroming, o ing the material.

to the material a meta-amino-phenolic body, an alkali chlorate, thencausing the oxidation of the metaamino-phenolic body substantially asdescribed.

2. The processof producing brown, olive,

and green shades on the fiber by applying to the materialameta-amino-phenol1c body an alkali chlorate, and a ferrocyanid, thenand finally wash- 7 3. The process of producing brown, olive, and greenshades on the fiber by applying to the material a meta-amino-phenolicbody,

a para-fammo-phenolic body, an alkali chlorate, and a'ferrocyanid, thensteamin then chroming,-and finally washin the material' 4. The processof pro ucing brown shades on the fiber by'applying to the material ameta-amino-phenolic body, an alkali chlorate, and a -ferrocyanid,thensteaming, then chroming, and finally washing the material-in analkaline bath. V

5. The [process of producing brown shades 0n the fiber by applying totheimaterial meta-amino-phenol, para-amino-phenol,

an alkali chlorate, andfa ferrocyanid, then and a ferrocyanid, and- 'ingsteaming, then chroming, and finally washing' the material in analkaline bath.

6. The process of producing gbrown shades with discharge effects on thefiber by applying to the material a meta-amino-phenolic body, an alkalichlorate, and a ferrocyanid, then witnesses. r

' HENRI SCHMID.

WVitnesses: GEO. GIEFORD,

ABNOLQ ZUBER.

drying the material and print- 7 'ing it with a paste containing areducing

